摘要:
The invention aims to make it unnecessary to reposition an objective lens when repeatedly carrying out examinations. It is possible to carry out in vivo examination of tissue such as cells and muscle tissue or various internal organs, such as the heart, liver, and so forth, of mammals, especially small experimental animals, over a comparatively long period of time. A microscope system having an objective optical system unit (123) and a structure (153,162) or member for fixing the objective optical system unit to a living body (W2) is provided.